Well I read the water article Mr E but there are still some things I don't get....all those ferts etc are supposed to already have ph buffers in them. Why aren't they working for you??!! I did notice however that when I mix a new batch of ferts the ph is usually low and I bring it up with baking soda before I do a res change so perhaps I've just plain been way ahead of you the whole time.....the last few times I have done res changes I have not had to raise my ph first and now thinking about it I realize that the ph is not staying as stable at first as it was but settles down pretty well after I adjust it with ph down for the first time. (Always goes up.... never down so ha)
Weedhound Reviewed by Weedhound on . PH Dropping quickly? I'm sorry to post this question, I tried to search but the term "PH" is too short for the boards search function... I'm having to PH Up my nutes more frequently as my plants grow. I'm wondering if this is considered normal, or if it is indicitive of any actual problems etc. I only use 8 to 10 gallons or so total (going to change it out and measure carefully today) and the plants are only about 10 inches tall, on their 8th node. I calibrated my continuous meter yesterday, and PH Up'd to Rating: 5